blktapctrl.h

xen 3.2.2 源码

/* blktapctrl.h
 *
 * controller image utils.
 * 
 * (c) 2004-6 Andrew Warfield and Julian Chesterfield
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation; or, when distributed
 * separately from the Linux kernel or incorporated into other
 * software packages, subject to the following license:
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this source file (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy, modify,
 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
 * and to permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */


static inline unsigned long long tapdisk_get_size(blkif_t *blkif)
{
	image_t *img = (image_t *)blkif->prv;
	return img->size;
}

static inline unsigned long tapdisk_get_secsize(blkif_t *blkif)
{
	image_t *img = (image_t *)blkif->prv;
	return img->secsize;
}

static inline unsigned int tapdisk_get_info(blkif_t *blkif)
{
	image_t *img = (image_t *)blkif->prv;
	return img->info;
}

struct blkif_ops tapdisk_ops = {
	.get_size = tapdisk_get_size,
	.get_secsize = tapdisk_get_secsize,
	.get_info = tapdisk_get_info,
};